Core-arbor.



I. 'H. LONG 62 S. ALMILLIGAN. n. 11.1mm, ADMINISTRATOR or I. H. 1.01m,nno'n. CORE ARBOR.

urmouron rum: rma.1,19oa,

918,564. Patnted Apr. 20, 1 09.-

3 WITNESSES v A TTOBNEYS- nnrrissnares. 'IPAFEENT ornrcn lRVING HODGSONLONG AND SAMUEL AUGUSTUS MILLIGAN, OF LOUISVILLE, KENTUCKY; DENNIS H.LONG ADMINTSTRAFOR OF SAID lltVl NG HODGSON LONG, DECEASED.

CORE-ARBOR.

Specification of Letters Patent.

Patented April 20, 1909.

Application filed February 1, 1908. Serial No. 413,797.

T 0 all whom it may concern:

Be it known that we, lnvixc llODGSON Lone and SAMUEL Aneusrus MiLLIo-AN,both citizens of the United States, and residents of Louisville, in thecounty of Jefferson and State of Kentucky, have invented a new andImproved Core-Arbor, of which the following 1s a full, clear, and exactdescription.

The invention relates to the manufacture of cast iron pipes havingintegral branches, and its object is to provide a new and improved corearbor for use in green sand or sharp sand cores, and arranged to permitof.

readily and securely interlocking the branch core arbor with the main.core arbor, without danger of the branch core sagging or becoming loose,and to allow convenient and quick unlocking of the branch core arbor andremoving the cores from the pipe after the casting operation iscompleted.

The invention consists of novel features and parts and combinations ofthe same, which will be more fully described hereinafter and thenpointed out in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whic h.similar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a plan view of the improvement, arranged as a core arbor forcasting a pipe having a single branch; Fig. 2 is an enlarged sectionalplan view of the coupling for interlocking the branch core arbor withthe main core arbor; Fig. 3 is an enlarged face view of the main corearbor having the socket Fig. 4 is a perspective view of part of a branchcore arbor provided with the key, and Fig. 5 is a plan view of theimprovement arranged as a core arbor, to be used in cores for castingpipes having a plurality of branch pipes.

The main core arbor A is provided with an integral socket B forreceiving a key C integrally projecting from the inner end of the branchcore arbor D, to allow of joining the said branch core arbor D to themain core arborA at an angle thereto, the angle varying according to theparticular pipe specials to be manufactured, that is, whether the pipeis to be a Y-pipe, a T-pipe or the like. In the manufacture of a crosspipe, use is made of a main arbor A (see Fig. 5), provided on oppositesides with two integral sockets B, 13*, for receiving the keys of branchcore arbors D, D As the sockets and keys are alike in construction, itsuflices to describe but one in detail. Each socket B is provided with akey hole B (see Fig. 3) for the passage of the corrcspondingly-shapedbit C" of the key C, and the sides B of the key hole B are beveled orformed with cam surfaces at the inner ends, so that the bit C in passingon the said cam surfaces causes the key (I and consequently the brancharbor D, D or D to be drawn inward, to securely interlock the branchcore arbor with the main core arbor A. The face of the socket B isengaged by flange C formed on the key C, so that when the key C engagesthe socket and the branch core arbor D, D or D is given a quarter turnand drawn inward by the cam surfaces of the sides B, then thesaid llangcC is firmly drawn in contact with the face of the socket B, to securelyhold the branch core arbor D, D or D in position on the main core arborA or r From the foregoing it will be seen that in order to connect abranch core arbor with the main core arbor, it is only necessary for thearbor operator to engage the key (3 with the socket l5 and then give aquarter turn to the branch core arbor, to securely interlock the corearbor and to bring the cores in proper relation to each other. When itis desired to break up a core, it is only necessary to give a quarterback turn to the branch core arbor D, D or D to unlock the key C in thesocket B and to allow of withdrawing the key of the branch core arbor Dfrom the said socket.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent:

1. A core arbor, comprising a main core arbor, and a branch core arbor,one of the arbors having a socket and the other having an integral keyfor engagement with the said socket and adapted to be turned therein,the key and socket having cam surfaces for engagement one by the other,whereby when the key engages the socket and the core arbor carrying thekey is turned, the key is drawn inward in the socket.

2. A core arbor, comprising a main core arbor having a circular socketprovided with an end wall having a key hole opening therein, the innersurface of the end wall at opposite sides of the key hole being beveled,and a branch core arbor having an integral key projecting from its innerend and adapted to pass into the socket, the bit of the keycorresponding to the shape of the key hole, and adapted to engage thebeveled surface at the end of the socket to draw the branch core arborinward when the letter is turned, the key having a circular flangespaced from the bit for engagement with the outer face of the end wallof the socket, when the core arbors are interlocked.

3. In core arbors for the manufacture of pipes having integral branches,the combination with a solid main core arborhaving an integral socketlocated between its ends and arranged at an angle thereto, the outer endwall of the socket being provided with a keyhole entrance and the innersurface of said end well being beveled, and a solid branch core arborhaving an integral key projecting from its inner end and adapted to passinto the socket and to be turned therein in engagement with the saidbeveled surface, the said key having a flange spaced from the key bitand adapted to engage the outer face of the end wall of the socket.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

IRVING HODGSOX LONG. SAMUEL AUGUSTUS lvllhhlG-AN. i li'tnesses:

DENNIs H. LONG, C. EUGENE BRAUN.

